[GreenKeys] Mod 28 Gearing

[Steve Garrison]

Are your numbers correct John?  It seems like the number of teeth for 7.42
would be between the number of teeth for 7.00 and 7.50. Or am I just not
understanding the gearing?

Steve G./N4TTY

-----Original Message-----
From: greenkeys-bounces at mailman.qth.net <greenkeys-bounces at mailman.qth.net>
On Behalf Of John, W9DDD
Sent: Monday, August 12, 2019 9:25 AM
To: greenkeys at mailman.qth.net
Subject: Re: [GreenKeys] Mod 28 Gearing

Count the teeth on the keyboard gear.

24 teeth - 7.42
28 teeth - 7.00
30 teeth - 7.50

John, W9DDD
Ich habe dreimal abgeschnitten uns jetzt zu kurtz. (I cut it off 3 times and
it's still too short.)

On 8/12/2019 8:20 AM, Steve Garrison wrote:
> Good point Nick.  The keyboard is what generates the signals, the 
> magnets on the printer just respond to whatever they receive.
> 
> Steve G./N4TTY
> 
> *From:* greenkeys-bounces at mailman.qth.net 
> <greenkeys-bounces at mailman.qth.net> *On Behalf Of *Nick England
> *Sent:* Monday, August 12, 2019 5:50 AM
> *To:* John Lawson <john at tubetestingpros.com>
> *Cc:* greenkeys at mailman.qth.net
> *Subject:* Re: [GreenKeys] Mod 28 Gearing
> 
> BIG question is the keyboard. Is it 7.00 or 7.42??
> 
> On Sun, Aug 11, 2019 at 11:36 PM John Lawson <john at tubetestingpros.com 
> <mailto:john at tubetestingpros.com>> wrote:
> 
> 
>     Greetings Greenkeys!
> 
>     I'm about to order a set of gears for the Tempest Mod 28, which I am
>     told - (how to verify?) is a 75wpm machine. [hmmmm mebbe it ain't -
>     best
>     go check...]
> 
>     Tom Tillson kindly sent a chart summarizing the gearsets for the 28s,
>     KSR and ASR.
> 
>     Of course my goal is to send and copy RTTY at 45 baud with this 28.
>     It's
>     a KSR so no re-perf or td.
> 
> 
>     So, from the chart, there is gearing for 65wpm - 390 opm, 45.5 baud,
>     7.00 unit code. There is a motor pinion and the driven gear.
> 
>     Keyboard (LAK)  gearset 173795   consisting of:
> 
>     Gears:     173794 14 tooth
> 
>                        173793 100 tooth
> 
>     Isolator   159287
> 
>     Posts       161301  (need 2)
> 
> 
>     Gearing for 60wpm - 368 opm, 45.5 baud. 7.42 unit code
> 
>     Keyboard (LAK) gearset 161293  consisting of:
> 
>     Gears:     159278  14 tooth
> 
>                        159279  96 tooth
> 
>     Isolator  159287 (same)
> 
>     Posts      161301 (same)
> 
> 
>     Paul Cembura suggests  the 161293 / 45.5 / 7.42  set. I had originally
>     asked him for the 173795 / 45.5 / 7.42 set.
> 
> 
>     I understand a bit of the relationships involved - but in practical
>     terms - which is "better"??
> 
> 
>     Cheerz
> 
>     John KB6SCO
> 
>     Carson City NV
> 
> 
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> --
> 
> Nick England K4NYW
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> 
> 
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